11550199080 has 128 divisors (see below), whose sum is σ = 39788974080. Its totient is φ = 2627493120.

The previous prime is 11550199033. The next prime is 11550199081. The reversal of 11550199080 is 8099105511.

It is not an unprimeable number, because it can be changed into a prime (11550199081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144657 + ... + 209823.

It is an arithmetic number, because the mean of its divisors is an integer number (310851360).

Almost surely, 2^11550199080 is an apocalyptic number.

11550199080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11550199080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19894487040).

11550199080 is an abundant number, since it is smaller than the sum of its proper divisors (28238775000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11550199080 is a wasteful number, since it uses less digits than its factorization.

11550199080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65399 (or 65395 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 39.

The spelling of 11550199080 in words is "eleven billion, five hundred fifty million, one hundred ninety-nine thousand, eighty".